Security Hardening

Oracle Linux 8 — TLS 1.3 not supported for NSS in FIPS Mode — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — TLS 1.3 not supported for NSS in FIPS Mode

🟠 High   ⏱ 5–30 min  Last verified: 10 December 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug OLRNT-notlssupport-fips Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan […]

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FreeBSD 12 — mailman-exim — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mailman-exim — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 December 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mailman < 2.1.38 — CSRF vulnerability of list mod or member against list admin page Related CVEs: CVE-2021-43331 CVE-2021-43332 CVE-2021-44227 Upstream summary: Mark Sapiro reports: A list moderator or list […]

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Debian 11 — dbus-glib — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — dbus-glib — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-1172 CVE-2013-0292 Upstream summary: DBus-GLib 0.73 disregards the access flag of exported GObject properties, which allows local users to bypass intended access restrictions and possibly cause a denial […]

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How to Install FastAPI on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install FastAPI on CentOS Stream 9

Introduction Setting up install fastapi on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install FastAPI on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Configure DHCP Server on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure DHCP Server on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure dhcp server on ibm aix 7.1 on IBM […]

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Debian 11 — node-node-sass — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-node-sass — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-24025 Upstream summary: Certificate validation in node-sass 2.0.0 to 4.14.1 is disabled when requesting binaries even if the user is not specifying an alternative download path. Table of […]

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Debian 11 — geoip — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — geoip — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-0159 Upstream summary: Directory traversal vulnerability in the GeoIP_update_database_general function in libGeoIP/GeoIPUpdate.c in GeoIP 1.4.0 allows remote malicious update servers (possibly only update.maxmind.com) to overwrite arbitrary files via […]

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How to Set Up CircleCI Runner on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up CircleCI Runner on SLES 15

Introduction This tutorial covers How to Set Up CircleCI Runner on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper […]

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Debian 11 — pcal — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pcal — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-1289 Upstream summary: Multiple buffer overflows in (1) the getline function in pcalutil.c and (2) the get_holiday function in readfile.c for pcal 4.7.1 allow remote attackers to execute […]

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Debian 11 — qpdf — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — qpdf — multiple vulnerabilities (18 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-9252 CVE-2017-11624 CVE-2017-11625 CVE-2017-11626 CVE-2017-11627 CVE-2017-12595 CVE-2017-18183 CVE-2017-18184  +10 more Upstream summary: An issue was discovered in QPDF before 7.0.0. Endless recursion causes stack exhaustion in QPDFTokenizer::resolveLiteral() in […]

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